PROBLEM TO BE SOLVED: To provide a holding device that holds a tubular part of a medical instrument such as a flexible endoscope so as to be capable of advancing and retreating and can provide a twisting motion to the tubular part without rotating the holding device itself.SOLUTION: A holding device 1 for holding a tubular part of a medical instrument such as a flexible endoscope so as to be capable of advancing and retreating includes holding members (11A, 11B) for holding the tubular part so as to be freely rotatable relative to a rotation direction about the longitudinal direction thereof while causing the tubular part to relatively advance and retreat in the longitudinal direction.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】軟性内視鏡などの医療用器具の管状部を進退可能に保持する保持装置であって、保持装置そのものを回転させることなく、管状部にひねり動作を与えることが可能な保持装置の提供。【解決手段】軟性内視鏡などの医療用器具の管状部を進退可能に保持するための保持装置であって、前記管状部を、その長手方向に相対的に進退させつつ、長手方向を軸とした回転方向に対しては回動自在に保持する保持部材（１１Ａ、１１Ｂ）を備える、保持装置１。【選択図】図３
